What's the best way to insert values into data binding within a Typescript/ Angular mat Table?

Question

What's the best way to insert values into data binding within a Typescript/ Angular mat Table?

Objective: Create a dynamic table using JSON data

 <mat-table class="mat-elevation-z8" *ngIf="carrierRates" [dataSource]="carrierRates">
        <ng-container *ngFor="let columnName of columnsList" matColumnDef="{{columnName}}">
            <mat-header-cell *matHeaderCellDef>{{columnName}}</mat-header-cell>
            <mat-cell *matCellDef="let itemRate">
                {{itemRate.$columnName}}
            </mat-cell>
            <mat-footer-cell *matFooterCellDef></mat-footer-cell>
        </ng-container>
<mat-header-row *matHeaderRowDef="columnsList;"></mat-header-row>
        <mat-row *matRowDef="let row; columns: columnsList;"></mat-row>
        <mat-footer-row *matFooterRowDef="columnsList"></mat-footer-row>

    </mat-table>

Inquiry 1: How can I iterate through the column list and data source in separate loops?

Inquiry 2: What is the correct method to pass the value of columnName in this line {{itemRate.$columnName}}

Note: columnName represents the keys in the JSON object

{"planId":"abcd",
"rateAreaId":"lmpo",
"singleMonthly":0,
"twoPeopleMonthly":0,
"familyMonthly":0}

angular typescript angular-material typescript2.0

Answer 1

Answer №1

Instead of using 2 nested loops, you can streamline your code by defining templates for columns and rows separately.

Define each column with a unique name and specify the header content along with the data it should display for each row. For example, create a column named planId to show the Plan ID:

<ng-container matColumnDef="planId">
  <th mat-header-cell *matHeaderCellDef> Plan ID</th>
  <td mat-cell *matCellDef="let itemRate"& gt; {{itemRate.planId}} </td>
</ng-container>

Continue this process for other columns as well.

The column names you'll be working with are planId, rateAreaId, singleMonthly, twoPeopleMonthly, familyMonthly. Create a variable columnList in your component file containing these column names:

columnList = [planId, rateAreaId, singleMonthly, twoPeopleMonthly, familyMonthly];

Add mat-header-row and mat-row within your mat-table component, and pass columnList as inputs:

<tr mat-header-row *matHeaderRowDef="columnsList"></tr>
<tr mat-row *matRowDef="let row; columns: columnsList"></tr>

Note: You can rearrange and customize the displayed columns dynamically by altering the order or selection of columns in your columnList.

This flexibility allows you to easily manage the layout of your table based on changing requirements.

I've summarized some key points from the extensive Angular Material Table documentation ;)

Answer 2

Instead of using 2 nested loops, you can streamline your code by defining templates for columns and rows separately.

Define each column with a unique name and specify the header content along with the data it should display for each row. For example, create a column named planId to show the Plan ID:

<ng-container matColumnDef="planId">
  <th mat-header-cell *matHeaderCellDef> Plan ID</th>
  <td mat-cell *matCellDef="let itemRate"& gt; {{itemRate.planId}} </td>
</ng-container>

Continue this process for other columns as well.

The column names you'll be working with are planId, rateAreaId, singleMonthly, twoPeopleMonthly, familyMonthly. Create a variable columnList in your component file containing these column names:

columnList = [planId, rateAreaId, singleMonthly, twoPeopleMonthly, familyMonthly];

Add mat-header-row and mat-row within your mat-table component, and pass columnList as inputs:

<tr mat-header-row *matHeaderRowDef="columnsList"></tr>
<tr mat-row *matRowDef="let row; columns: columnsList"></tr>

Note: You can rearrange and customize the displayed columns dynamically by altering the order or selection of columns in your columnList.

This flexibility allows you to easily manage the layout of your table based on changing requirements.

I've summarized some key points from the extensive Angular Material Table documentation ;)

What's the best way to insert values into data binding within a Typescript/ Angular mat Table?

Answer №1

Similar questions

Eslint highlighting the initial function declaration within a Vue script

Creating IPv6 Mask from IPv6 Prefix Using Javascript: A Step-by-Step Guide

Angular - Facing issues with CORS for every request made

Performing a HTTP GET request in Angular 2 with custom headers

There is an issue with the Next.js middleware: [Error: The edge runtime is not compatible with the Node.js 'crypto' module]

Ways to cite a vendor in static class functions?

Obtaining child component references in Angular using @ViewChildren

Leverage the TypeScript Compiler API to verify whether an interface property signature permits the value of undefined (for example, prop1?:

CoursesComponent does not contain a Directive annotation

Incorporating a TypeScript module into a JavaScript module within a React application

What is the best way to define a signal within a class interface in Angular 17?

What causes TypeScript to interpret an API call as a module and impact CSS? Encountering a Next.js compilation error

Activate combineLatest from a different component

How can I define the type of a constructor that requires a parameter in TypeScript?

Angular: Updating image tag to display asynchronous data

Creating a TypeScript type that extracts specific properties from another type by utilizing an array of keys

Yes, it's not able to retrieve the value from headlessui combobox

Exploring ways to display all filtered chips in Angular

Having trouble deleting a component from an array in React?

Choose between creating an observable pipe within a function or storing it in a variable